Tube-mill.



l 9 l y H. W. WEIMER. TUBE MILL.`

APPLlcATmw-Fum Mmmm, uns.

l L www@ Jan. 14, i919.

- Buco W., man, or icrnwauimn, WISCONSIN, AssreNon To WomHINeroN .PUMP ANDNACHINERY conronA'rIoN, or NNW vom, N. Y., A. CORPORATION or vmemm.

TUBE-MILL.

To all whom it may concern.'

Be it known that I, HUGO W. WE'IMER, a citizen of the United States, residing at Mil- Waukee, county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Tube-Mills, fully described and `represented in the following specification and the accompanying draw*- in s, forming a part of the same.

his invention relates particularly to that wcllknown class of machines for grinding or crushing ore and other materials, commonly known as tube mills or ball mills, the especial object being to provide an improved discha'rge diaphragm or screen construction for such mills.

The discharge diaphragms or screens used on such mills are large and heavy,- and it has been found difficult to vmount them satis` factorily so that they are held rigidly in position and against movementaround the mill in the direction of its rotation, while at the same time providing for a quick and convenient removal and replacement of the diaphragm and screen when necessary. The present. invention provides a verysimple,-

cheap and efficient construction and mounting of the diaphragm, kin which the diaphragm is'dividcd into sections hinged at their outer periphery in such manner as to avoid rotation in the mill head,.and with the sections secured at the center, so that the sections may readily be connected to the head at their periphery and then swung downward and secured at the Vcenter by a single holding means and any section may Y readily be removed and re laced by releas l ing the holding means wit out moving the other sections.

For a full understanding ofthe invention, a detailed description of a construction embodying the invention in its preferred form, as applied to a tube mill of a common type, will now be., given in connection with the accompanying drawings forming a part of' this specification, andthe features forming the invention thenspecifically pointed out in the claims. i

In the drawings z- Figure 1 is a central section ofone end of the rotating barrel or tube of a tube mill embodying the invention.

Figs. 2 and 3 are cross sections on the lines 2 2 and 3-3 of Fig. 1.

Referring to the drawings, A is the ro- Specicaton of Letters Patent. Patented Jan, 14, 1919,

Application led 'March 25, i

1918. Serial No. 224,407.

'to the'size of the mill, and preferably. of

sectordke form, six such sections being shown 1n the present case. Each of these barrel or tube, shown as V.driven by sections has at -its peripheryI a projecting lug 11 adapted to be inserted in a recess or socket 12 in the liner or head C'Qiso that the parts 11, 12 form a `hinge such that the section may readily be mounted inl place by inserting the lug v11 into the recess 12 and swinging the section downward into a vertical plane and the section is then held gainst sidewise movement bythe hinge, an t may be removed readily after swinging it upward `from the vertical plane. The inner ends of' the diaphragm sections when in place :torni an openingshown as receiving a hub on washer 13 mounted on the d scharge hub 14 extending through the di"- charge and bored to receive bolt 15 by whic place between washer 13 and another washer 16 on the inner side of the diaphragm.

`The bolt 15 is'shown as secured by nuts 1 at the outer end ofthe discharge hub, so vas to be readily accessible through the discharge funnel F. Between the diaphragm G and the head are the usual lifters or par tition plates H, `four being shown, which are held. in position at `their outer ends between lugs 2 on the liner of head C and at their :inner ends in notches 3 in hub 14 so as `to rotate with the barrel and. diaphragm.

The assembling and disassemblin of the diaphra willbeunderstood fromt edraw in wit va brief description.

he sections are mounted successively `by inserting the lugs 11 into the sockets 12 and swinging the sections together at the center, the sections then preferably being per,

wooden wedges driven into the sockets. The

washer 16 is then positioned against the inner edges of the sections and center bolt drawn up andsecured by nuts 1, so asto hold the edges of the sections rigidly in Y place. When any diaphragm section is to be vinvention is not thus limited, but is generally applicable in similar apparatus employing a diaphragm orv screen on either the inlet or discharge.l It will be understood also that the invention is not limited to the specific construction shown, but that modifications may be made within' the invention as defined by the claims.

What is claimed is: 1. In a tube mill or the like, a diaphragm divided into sections, in combination with means for hinging the sections lto the mill at their outer periphery and securing the sections at the center. i,

2. In atube mill or the like, a dia, hragm divided into sections, in combinati` n with means for hinging the sections to the mill at' their outer periphery, anda single clamping means for securing all the inner edges of the sections at the center.

3. In a tube mill or the like, the combination with a transverse head or wall having recesses forming one member of a hinge, of a diaphragm divided into sections, each of said sectionsrhavlng lugs entering said recesses to form the other members of the hinge, said recesses and lugs being :formed to hold'the diaphragm against. withdrawal when in working position and to ermit the sections to be inserted and remove when swungout of working position, and a single clamping means for securing the inner e'dges of the sections in working osition.

4. In a tube mill or thc\11ke, the ombination with a transversehead or wa l having recesses formin onen ember of a hinge, of a diaphragm divided@ into sections, each of said sections having lugs enteringsaid recesses to form the ot r members ofthe hinge, said recesses and ugs `being formed to hold the diaphragm against withdrawal sections Kto be inserted and removed whenl swungoutofrworking position, a fixed hub within the inner edges `of the dia hragm Sections, a bolt extending through tie hub, and afclamping washer on said bolt for holding the`- inner edges ofthe diaphragm .secs tibpsA im working position.

,5; 4In.`a tube mill or the like, the combinationl with a transverse head or wall, `of a diaphragm divided into sections, means for hinging the sections to the head so arranged asto hold the diaphragm sections against withdrawal when in working position and to releasethe sections when swun out of working position, a xed hub wit in the inner edges of the diaphragm sections, a bolt extending through the hub and a clamping washer on said bolt for holding the inner edges of the diaphragm sections in working position. y y

In testimony whereof, I have hereunto set my hand.

HUGO W. WEIMER.

-When in working position and to permit the'4 

